| 1950 |
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One-man petrol-driven chainsaw BL
The world's first petrol-driven chainsaw for a single operator (16 kg) is equipped with a manually adjusted swivel carburetor allowing the saw to be used not only for bucking, but also for felling. |
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| 1953 |
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Earth auger BL 241
An attachment transforms the chainsaw model BL into a planting-hole drill. |
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| 1954 |
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Two-stroke diesel engine Type 134
STIHL builds the two-stroke diesel engine to drive machines of every kind. |
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Petrol-driven chainsaw BLK
The first really light chainsaw weighs 11 kilograms. Its model designation BLK stands for Benzin (petrol) - Leicht (light) - Klein (handy, compact). |
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| 1957 |
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Forest combination BLK
The range of uses of a chainsaw is considerably enlarged by the use of attachments: clearing saw ("badger"), release-cutting saw ("marten") and thinning saw ("beaver"), post and planting-hole auger and the suction and delivery pump. |
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| 1958 |
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All-position diaphragm carburetor
It is only when equipped with a diaphragm carburetor that the chainsaw can be operated in literally any working position, e.g. for felling and bucking trunks, without first having to swivel the carburetor by hand. |
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| 1959 |
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Petrol-driven chainsaw Contra
The use of power tools for forest work is finally established throughout the world with the advent of the STIHL Contra (6 HP, 12 kg). |
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